<!DOCTYPE html>
<html>

<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
    <style type="text/css">
        body,
        html {
            width: 100%;
            height: 100%;
            margin: 0;
            font-family: "微软雅黑";
            font-size: 14px;
        }
        
        #l-map {
            height: 300px;
            width: 100%;
        }
        
        #r-result {
            width: 100%;
        }
        
        .tangram-suggestion-main {
            z-index: 9999999999;
        }
    </style>
    <script src="res/jquery-3.51.min.js" type="text/javascript" charset="utf-8"></script>
    <script type="text/javascript" src="//api.map.baidu.com/api?v=2.0&ak=Mbr1pllRG9s4yUw2dS8FQW0KZ9FLlMY6"></script>
    <title>关键字输入提示获取内容反填入表单</title>
</head>

<body>
    <div id="r-result">请输入:<input type="text" id="suggestId" size="20" value="百度" style="width:150px;" /></div>
    <div id="searchResultPanel" style="border:1px solid #C0C0C0;width:150px;height:auto; display:none;"></div>
    <div class="">
        地址:<input type="text" id="address" value="" readonly="readonly" placeholder="请输入地址" />
    </div>
    <div id="l-map"></div>
</body>

</html>
<script type="text/javascript">
    // 百度地图API功能
    function G(id) {
        return document.getElementById(id);
    }

    var map = new BMap.Map("l-map");
    // 初始化地图,设置城市和地图级别。
    map.centerAndZoom("北京", 12);
    //建立一个自动完成的对象
    var ac = new BMap.Autocomplete({
        "input": "suggestId",
        "location": map
    });
    //鼠标放在下拉列表上的事件
    ac.addEventListener("onhighlight", function(e) {
        var str = "";
        var _value = e.fromitem.value;
        var value = "";
        if (e.fromitem.index > -1) {
            value = _value.province + _value.city + _value.district + _value.street + _value.business;
        }
        str = "FromItem<br />index = " + e.fromitem.index + "<br />value = " + value;

        value = "";
        if (e.toitem.index > -1) {
            _value = e.toitem.value;
            value = _value.province + _value.city + _value.district + _value.street + _value.business;
        }
        str += "<br />ToItem<br />index = " + e.toitem.index + "<br />value = " + value;
        G("searchResultPanel").innerHTML = str;
    });

    var myValue;
    //鼠标点击下拉列表后的事件
    ac.addEventListener("onconfirm", function(e) {
        var _value = e.item.value;
        myValue = _value.province + _value.city + _value.district + _value.street + _value.business;
        G("searchResultPanel").innerHTML = "onconfirm<br />index = " + e.item.index + "<br />myValue = " + myValue;

        setPlace();
    });

    function setPlace() {
        //清除地图上所有覆盖物
        map.clearOverlays();

        function myFun() {
            //获取第一个智能搜索的结果
            var pp = local.getResults().getPoi(0).point;
            // 获取搜索结果的详细地址
            window.alert(local.getResults().getPoi(0).address)
            let address = local.getResults().getPoi(0).address;
            // 将获取到的地址填充到表单
            window.document.getElementById("address").value = address
            map.centerAndZoom(pp, 18);
            //添加标注
            map.addOverlay(new BMap.Marker(pp));
        }
        //智能搜索
        var local = new BMap.LocalSearch(map, {
            onSearchComplete: myFun
        });
        local.search(myValue);
    }
</script>